Where did the french citizens get their weapons for the revolution

During revolution, the French citizens acquired their weapons at the Hotel national des invalides. The same place had been attacked by a group of Parisians on that day. However, the citizens managed to acquire muskets and cannons.

yellow fever and other tropical diseases

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.